Photonic crystal is a periodic arrangement of dielectric rods positioned in air at optimal spacing. Photonic crystal properties depend on the geometrical parameters such as material, radius of rods, lattice constant etc. This paper examines Photonic Band Gap (PBG) due to change in radius of rods and lattice constant of 2D photonic crystal structure. A detailed study of the PBG of 2D photonic crystal structure has been presented using Finite Element Method (FEM). A line defect is introduced into the photonic crystal structure and its impact on PBG has been investigated. The results show that after increase in radius of rods PBG becomes wider, whereas increase in lattice constant decreases the width of bandgap.Photonic crystal is a periodic arrangement of dielectric rods positioned in air at optimal spacing. Photonic crystal properties depend on the geometrical parameters such as material, radius of rods, lattice constant etc. This paper examines Photonic Band Gap (PBG) due to change in radius of rods and lattice constant of 2D photonic crystal structure. A detailed study of the PBG of 2D photonic crystal structure has been presented using Finite Element Method (FEM). A line defect is introduced into the photonic crystal structure and its impact on PBG has been investigated. The results show that after increase in radius of rods PBG becomes wider, whereas increase in lattice constant decreases the width of bandgap.
{"title":"Performance analysis of 2D photonic crystal with line defect","authors":"Karuna Gamare, R. B. Jain","doi":"10.1063/1.5131598","DOIUrl":"https://doi.org/10.1063/1.5131598","url":null,"abstract":"Photonic crystal is a periodic arrangement of dielectric rods positioned in air at optimal spacing. Photonic crystal properties depend on the geometrical parameters such as material, radius of rods, lattice constant etc. This paper examines Photonic Band Gap (PBG) due to change in radius of rods and lattice constant of 2D photonic crystal structure. A detailed study of the PBG of 2D photonic crystal structure has been presented using Finite Element Method (FEM). A line defect is introduced into the photonic crystal structure and its impact on PBG has been investigated. The results show that after increase in radius of rods PBG becomes wider, whereas increase in lattice constant decreases the width of bandgap.Photonic crystal is a periodic arrangement of dielectric rods positioned in air at optimal spacing. Photonic crystal properties depend on the geometrical parameters such as material, radius of rods, lattice constant etc. This paper examines Photonic Band Gap (PBG) due to change in radius of rods and lattice constant of 2D photonic crystal structure. A detailed study of the PBG of 2D photonic crystal structure has been presented using Finite Element Method (FEM). A line defect is introduced into the photonic crystal structure and its impact on PBG has been investigated. The results show that after increase in radius of rods PBG becomes wider, whereas increase in lattice constant decreases the width of bandgap.","PeriodicalId":435771,"journal":{"name":"INTERNATIONAL CONFERENCE ON INVENTIVE MATERIAL SCIENCE APPLICATIONS : ICIMA 2019","volume":"34 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-10-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115432840","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Owing to their unique characteristics, nano sized semiconducting particles are being widely probed with respect to the effect of particle size. The biological, chemical and physical properties of these particles are found to be enhanced significantly by decreasing the particle size from micrometer to nanometer scale. Among them, zinc oxide is a versatile material with superior electronic transport capabilities, robust optical transparency, relatively huge surface area to volume ratio, large exciton binding energy (60 meV) at room temperature and wide band gap (3.37 eV). Graphene, considered as the parent of all carbon materials, is a two-dimensional layered hexagonal lattice of sp2 bonded carbon atoms. This work has been carried out to explore the electrochemistry of few layered graphene/zinc oxide nanocomposites. The morphology and size of the composites were characterized by using Transmission Electron Microscopy and Field Emission Scanning Electron Microscopy. The electrochemical behavior of the prepared nanocomposites was studied by using Electrochemical Impedance Spectroscopy and Cyclic Voltammetry. The obtained materials were tested as electrodes in supercapacitors. The graphene based ZnO nanocomposites exhibit enhanced specific capacitance when compared with pure ZnO samples.Owing to their unique characteristics, nano sized semiconducting particles are being widely probed with respect to the effect of particle size. The biological, chemical and physical properties of these particles are found to be enhanced significantly by decreasing the particle size from micrometer to nanometer scale. Among them, zinc oxide is a versatile material with superior electronic transport capabilities, robust optical transparency, relatively huge surface area to volume ratio, large exciton binding energy (60 meV) at room temperature and wide band gap (3.37 eV). Graphene, considered as the parent of all carbon materials, is a two-dimensional layered hexagonal lattice of sp2 bonded carbon atoms. This work has been carried out to explore the electrochemistry of few layered graphene/zinc oxide nanocomposites. The morphology and size of the composites were characterized by using Transmission Electron Microscopy and Field Emission Scanning Electron Microscopy. The electrochemical behavior of the prepar...
{"title":"Few layered graphene/ZnO nanocomposites as electrode of supercapacitor","authors":"P. Geetha, G. Raju, P. Sarita","doi":"10.1063/1.5131615","DOIUrl":"https://doi.org/10.1063/1.5131615","url":null,"abstract":"Owing to their unique characteristics, nano sized semiconducting particles are being widely probed with respect to the effect of particle size. The biological, chemical and physical properties of these particles are found to be enhanced significantly by decreasing the particle size from micrometer to nanometer scale. Among them, zinc oxide is a versatile material with superior electronic transport capabilities, robust optical transparency, relatively huge surface area to volume ratio, large exciton binding energy (60 meV) at room temperature and wide band gap (3.37 eV). Graphene, considered as the parent of all carbon materials, is a two-dimensional layered hexagonal lattice of sp2 bonded carbon atoms. This work has been carried out to explore the electrochemistry of few layered graphene/zinc oxide nanocomposites. The morphology and size of the composites were characterized by using Transmission Electron Microscopy and Field Emission Scanning Electron Microscopy. The electrochemical behavior of the prepared nanocomposites was studied by using Electrochemical Impedance Spectroscopy and Cyclic Voltammetry. The obtained materials were tested as electrodes in supercapacitors. The graphene based ZnO nanocomposites exhibit enhanced specific capacitance when compared with pure ZnO samples.Owing to their unique characteristics, nano sized semiconducting particles are being widely probed with respect to the effect of particle size. The biological, chemical and physical properties of these particles are found to be enhanced significantly by decreasing the particle size from micrometer to nanometer scale. Among them, zinc oxide is a versatile material with superior electronic transport capabilities, robust optical transparency, relatively huge surface area to volume ratio, large exciton binding energy (60 meV) at room temperature and wide band gap (3.37 eV). Graphene, considered as the parent of all carbon materials, is a two-dimensional layered hexagonal lattice of sp2 bonded carbon atoms. This work has been carried out to explore the electrochemistry of few layered graphene/zinc oxide nanocomposites. The morphology and size of the composites were characterized by using Transmission Electron Microscopy and Field Emission Scanning Electron Microscopy. The electrochemical behavior of the prepar...","PeriodicalId":435771,"journal":{"name":"INTERNATIONAL CONFERENCE ON INVENTIVE MATERIAL SCIENCE APPLICATIONS : ICIMA 2019","volume":"5 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-10-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122226040","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
M. Sreelakshmi, S. Chakraborty, A. Ravikumar, K. Bhowmick
We present a new strategy to theoretically design InAs-based quantum dots (QD) and nanostructures (NS) by modifying the morphology of a multi-junction solar cell (MJSC). This InAs-based structural arrangement comprising of 24 QD each of radius 100 nm radius embedded in 6 NS layers result in cell efficiency of 47.03%, which is an enhancement of 13% over the previously reported structure with a configuration of 12 InP spacing layers and 169 QD each of radius 25 nm. The open circuit voltage obtained is 2.25 V and filling factor attained is 85.05%. The modified MJSC structure exhibits absorption response for a part of the NIR spectrum (900 - 1200) nm, which makes it an ideal prospect for cloudy conditions.We present a new strategy to theoretically design InAs-based quantum dots (QD) and nanostructures (NS) by modifying the morphology of a multi-junction solar cell (MJSC). This InAs-based structural arrangement comprising of 24 QD each of radius 100 nm radius embedded in 6 NS layers result in cell efficiency of 47.03%, which is an enhancement of 13% over the previously reported structure with a configuration of 12 InP spacing layers and 169 QD each of radius 25 nm. The open circuit voltage obtained is 2.25 V and filling factor attained is 85.05%. The modified MJSC structure exhibits absorption response for a part of the NIR spectrum (900 - 1200) nm, which makes it an ideal prospect for cloudy conditions.
{"title":"Modified structural arrangement of InAs-based quantum dots and nanostructures for high efficiency multi-junction solar cells","authors":"M. Sreelakshmi, S. Chakraborty, A. Ravikumar, K. Bhowmick","doi":"10.1063/1.5131597","DOIUrl":"https://doi.org/10.1063/1.5131597","url":null,"abstract":"We present a new strategy to theoretically design InAs-based quantum dots (QD) and nanostructures (NS) by modifying the morphology of a multi-junction solar cell (MJSC). This InAs-based structural arrangement comprising of 24 QD each of radius 100 nm radius embedded in 6 NS layers result in cell efficiency of 47.03%, which is an enhancement of 13% over the previously reported structure with a configuration of 12 InP spacing layers and 169 QD each of radius 25 nm. The open circuit voltage obtained is 2.25 V and filling factor attained is 85.05%. The modified MJSC structure exhibits absorption response for a part of the NIR spectrum (900 - 1200) nm, which makes it an ideal prospect for cloudy conditions.We present a new strategy to theoretically design InAs-based quantum dots (QD) and nanostructures (NS) by modifying the morphology of a multi-junction solar cell (MJSC). This InAs-based structural arrangement comprising of 24 QD each of radius 100 nm radius embedded in 6 NS layers result in cell efficiency of 47.03%, which is an enhancement of 13% over the previously reported structure with a configuration of 12 InP spacing layers and 169 QD each of radius 25 nm. The open circuit voltage obtained is 2.25 V and filling factor attained is 85.05%. The modified MJSC structure exhibits absorption response for a part of the NIR spectrum (900 - 1200) nm, which makes it an ideal prospect for cloudy conditions.","PeriodicalId":435771,"journal":{"name":"INTERNATIONAL CONFERENCE ON INVENTIVE MATERIAL SCIENCE APPLICATIONS : ICIMA 2019","volume":"17 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-10-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114779286","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
This review summarizes the ongoing research activities on morphological changes being brought about by subjecting the natural cellulosic fibers to various chemical treatments. Most of the natural fibers being used as reinforcements in poly meric resins to form the polymer matrix composites are considered. The natural fibers contain an abundant number of polar hydroxyl groups and most of these hydroxyl groups are removed or modified in the cellulosic fibers when chemical treatments such as alkali, potassium permanganate, acetylation, benzoylation, acrylation, and silane treatments are carried out. A comprehensive review of mechanical characterization carried out on various combinations of natural fiber-polymer composites were presented. This review is expected to provide a ready reference for the researchers interested in the preparation of natural fiber reinforced polymer composites.This review summarizes the ongoing research activities on morphological changes being brought about by subjecting the natural cellulosic fibers to various chemical treatments. Most of the natural fibers being used as reinforcements in poly meric resins to form the polymer matrix composites are considered. The natural fibers contain an abundant number of polar hydroxyl groups and most of these hydroxyl groups are removed or modified in the cellulosic fibers when chemical treatments such as alkali, potassium permanganate, acetylation, benzoylation, acrylation, and silane treatments are carried out. A comprehensive review of mechanical characterization carried out on various combinations of natural fiber-polymer composites were presented. This review is expected to provide a ready reference for the researchers interested in the preparation of natural fiber reinforced polymer composites.
{"title":"Biodegradable natural fiber reinforced polymer matrix composites: Technical updates","authors":"G. Mahesha, Bhat K. Subrahmanya, N. H. Padmaraja","doi":"10.1063/1.5131588","DOIUrl":"https://doi.org/10.1063/1.5131588","url":null,"abstract":"This review summarizes the ongoing research activities on morphological changes being brought about by subjecting the natural cellulosic fibers to various chemical treatments. Most of the natural fibers being used as reinforcements in poly meric resins to form the polymer matrix composites are considered. The natural fibers contain an abundant number of polar hydroxyl groups and most of these hydroxyl groups are removed or modified in the cellulosic fibers when chemical treatments such as alkali, potassium permanganate, acetylation, benzoylation, acrylation, and silane treatments are carried out. A comprehensive review of mechanical characterization carried out on various combinations of natural fiber-polymer composites were presented. This review is expected to provide a ready reference for the researchers interested in the preparation of natural fiber reinforced polymer composites.This review summarizes the ongoing research activities on morphological changes being brought about by subjecting the natural cellulosic fibers to various chemical treatments. Most of the natural fibers being used as reinforcements in poly meric resins to form the polymer matrix composites are considered. The natural fibers contain an abundant number of polar hydroxyl groups and most of these hydroxyl groups are removed or modified in the cellulosic fibers when chemical treatments such as alkali, potassium permanganate, acetylation, benzoylation, acrylation, and silane treatments are carried out. A comprehensive review of mechanical characterization carried out on various combinations of natural fiber-polymer composites were presented. This review is expected to provide a ready reference for the researchers interested in the preparation of natural fiber reinforced polymer composites.","PeriodicalId":435771,"journal":{"name":"INTERNATIONAL CONFERENCE ON INVENTIVE MATERIAL SCIENCE APPLICATIONS : ICIMA 2019","volume":"6 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-10-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125760007","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Polyacrylonitrile (PAN) precursor fiber is the major precursor in demand for the production of carbon fiber. The conversion of PAN fiber to carbon fiber involves heat treatment of PAN fiber in different process condition at high temperatu re ranging from 200 to 1500 °C. The first step of heat treatment is oxidative stabilization of PAN fiber by controlled heating in air atmosphere at the temperature range 200-280 °C. Oxidative stabilization is a very slow process and the kinetics of stabilization depends on various parameters like comonomer composition in PAN copolymer, type of heat treatment atmosphere, heating rates, precursor fiber characteristics etc. The untreated and chemically treated precursor fiber characteristics are studied in detail during heat treatment under air atmosphere and effect of pretreatment on oxidative stabilization is studied using DSC, FTIR, elemental analysis and density measurements. Aqueous solution of Guanidine carbonate, ammonia and ammonium iodide are used for pretreating the precursor fiber prior to heat treatment. Chemical pretreatment of precursor fiber with guanidine carbonate and ammonia are found to help in achieving the optimum properties during oxidative stabilization.
{"title":"Oxidative stabilization studies on pretreated polyacrylonitrile precursor fiber suitable for carbon fiber production","authors":"S. Sunil, J. O. Abhilas, Ashok Kumar, H. Shukla","doi":"10.1063/1.5131605","DOIUrl":"https://doi.org/10.1063/1.5131605","url":null,"abstract":"Polyacrylonitrile (PAN) precursor fiber is the major precursor in demand for the production of carbon fiber. The conversion of PAN fiber to carbon fiber involves heat treatment of PAN fiber in different process condition at high temperatu re ranging from 200 to 1500 °C. The first step of heat treatment is oxidative stabilization of PAN fiber by controlled heating in air atmosphere at the temperature range 200-280 °C. Oxidative stabilization is a very slow process and the kinetics of stabilization depends on various parameters like comonomer composition in PAN copolymer, type of heat treatment atmosphere, heating rates, precursor fiber characteristics etc. The untreated and chemically treated precursor fiber characteristics are studied in detail during heat treatment under air atmosphere and effect of pretreatment on oxidative stabilization is studied using DSC, FTIR, elemental analysis and density measurements. Aqueous solution of Guanidine carbonate, ammonia and ammonium iodide are used for pretreating the precursor fiber prior to heat treatment. Chemical pretreatment of precursor fiber with guanidine carbonate and ammonia are found to help in achieving the optimum properties during oxidative stabilization.","PeriodicalId":435771,"journal":{"name":"INTERNATIONAL CONFERENCE ON INVENTIVE MATERIAL SCIENCE APPLICATIONS : ICIMA 2019","volume":"48 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-10-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121990994","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Ceramic Thermal Barrier Coatings (TBCs) provide protection to metals from degradation at high temperature. A major factor deciding the effectiveness of the coating in service is the temperature drop across the thickness of the coating. Common practice to determine the temperature drop is to subject the coating with a high heat providing flame with preset velocity by using combustible gases focused towards the coated surface, that keep the surface at desired stabilization temperature and the temperature is measured at the back side of the coating, i.e. at the metal side. The challenge is to heat the complete specimen surface using the flame and to reach an accurate stabilization temperature by using the flame as the heating source. In the present work, this challenge was overcome by using a uniform source of heat i.e. an electric heater on the entire coating surface. This paper presents the results obtained by studying the thermal barrier effects across TBCs by using the electrical heating source that provided the heat on the ceramic surface in a controlled and uniform manner, thereby establishing a newer assessment method.The TBCs were prepared by plasma spray coating commercial 8%Yttria-Stabilized Zirconia (8YSZ) as the top ceramic coat on flat plates of Aluminium 11% Silicon alloy removed from diesel engine pistons. TBC thicknesses varied between 100µm and 600µm. Air Plasma Spray coating was employed to coat the substrates which initially were spray coated with 50-75 µm thick bond coat of Nickel Aluminide. Thermal barrier test was conducted by heating the entire coated surface uniformly and by keeping the ceramic surface temperature constant till the stabilization in the range of 300°C to 500°C. The temperature drop achieved was in the range of 46°C to 127°C depending upon the coating thickness. Details of the tests conducted and results obtained are presented.Ceramic Thermal Barrier Coatings (TBCs) provide protection to metals from degradation at high temperature. A major factor deciding the effectiveness of the coating in service is the temperature drop across the thickness of the coating. Common practice to determine the temperature drop is to subject the coating with a high heat providing flame with preset velocity by using combustible gases focused towards the coated surface, that keep the surface at desired stabilization temperature and the temperature is measured at the back side of the coating, i.e. at the metal side. The challenge is to heat the complete specimen surface using the flame and to reach an accurate stabilization temperature by using the flame as the heating source. In the present work, this challenge was overcome by using a uniform source of heat i.e. an electric heater on the entire coating surface. This paper presents the results obtained by studying the thermal barrier effects across TBCs by using the electrical heating source that prov...
{"title":"Assessment of thermal barrier effects across 8%Y2O3-ZrO2 coatings on Al-Si substrates via electrical heating source","authors":"V. Reghu, V. Shankar, P. Ramaswamy","doi":"10.1063/1.5131603","DOIUrl":"https://doi.org/10.1063/1.5131603","url":null,"abstract":"Ceramic Thermal Barrier Coatings (TBCs) provide protection to metals from degradation at high temperature. A major factor deciding the effectiveness of the coating in service is the temperature drop across the thickness of the coating. Common practice to determine the temperature drop is to subject the coating with a high heat providing flame with preset velocity by using combustible gases focused towards the coated surface, that keep the surface at desired stabilization temperature and the temperature is measured at the back side of the coating, i.e. at the metal side. The challenge is to heat the complete specimen surface using the flame and to reach an accurate stabilization temperature by using the flame as the heating source. In the present work, this challenge was overcome by using a uniform source of heat i.e. an electric heater on the entire coating surface. This paper presents the results obtained by studying the thermal barrier effects across TBCs by using the electrical heating source that provided the heat on the ceramic surface in a controlled and uniform manner, thereby establishing a newer assessment method.The TBCs were prepared by plasma spray coating commercial 8%Yttria-Stabilized Zirconia (8YSZ) as the top ceramic coat on flat plates of Aluminium 11% Silicon alloy removed from diesel engine pistons. TBC thicknesses varied between 100µm and 600µm. Air Plasma Spray coating was employed to coat the substrates which initially were spray coated with 50-75 µm thick bond coat of Nickel Aluminide. Thermal barrier test was conducted by heating the entire coated surface uniformly and by keeping the ceramic surface temperature constant till the stabilization in the range of 300°C to 500°C. The temperature drop achieved was in the range of 46°C to 127°C depending upon the coating thickness. Details of the tests conducted and results obtained are presented.Ceramic Thermal Barrier Coatings (TBCs) provide protection to metals from degradation at high temperature. A major factor deciding the effectiveness of the coating in service is the temperature drop across the thickness of the coating. Common practice to determine the temperature drop is to subject the coating with a high heat providing flame with preset velocity by using combustible gases focused towards the coated surface, that keep the surface at desired stabilization temperature and the temperature is measured at the back side of the coating, i.e. at the metal side. The challenge is to heat the complete specimen surface using the flame and to reach an accurate stabilization temperature by using the flame as the heating source. In the present work, this challenge was overcome by using a uniform source of heat i.e. an electric heater on the entire coating surface. This paper presents the results obtained by studying the thermal barrier effects across TBCs by using the electrical heating source that prov...","PeriodicalId":435771,"journal":{"name":"INTERNATIONAL CONFERENCE ON INVENTIVE MATERIAL SCIENCE APPLICATIONS : ICIMA 2019","volume":"37 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-10-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123178270","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
The hygro thermo electro effects on the dispersion of functionally graded piezo electric rod are studied via three-dimensional elasticity equation in linear form. The stiffness and thermal conductivity of the material is considered to transport via radial coordinate. The motion equation is taken from the plain stress and strain form. The resulting partial differential equation is being solved to reach the coupled solution in Laplace domain. Developed power serious Matrix Frobonious method is employed to derive the analytical solutions. Dispersion relation is arrived via stress free initial and boundary conditions. The numerical results are presented to study the influence of hygro, thermal and piezo effects in the physical variables via grading values and moisture constants. The results are given as graphs. Table values are presented for validation.
{"title":"Hygro thermal vibration characteristics of an axisymmetric piezo electric functionally graded rod","authors":"R. Selvamani, J. Poongkothai, S. Jayakumar","doi":"10.1063/1.5131613","DOIUrl":"https://doi.org/10.1063/1.5131613","url":null,"abstract":"The hygro thermo electro effects on the dispersion of functionally graded piezo electric rod are studied via three-dimensional elasticity equation in linear form. The stiffness and thermal conductivity of the material is considered to transport via radial coordinate. The motion equation is taken from the plain stress and strain form. The resulting partial differential equation is being solved to reach the coupled solution in Laplace domain. Developed power serious Matrix Frobonious method is employed to derive the analytical solutions. Dispersion relation is arrived via stress free initial and boundary conditions. The numerical results are presented to study the influence of hygro, thermal and piezo effects in the physical variables via grading values and moisture constants. The results are given as graphs. Table values are presented for validation.","PeriodicalId":435771,"journal":{"name":"INTERNATIONAL CONFERENCE ON INVENTIVE MATERIAL SCIENCE APPLICATIONS : ICIMA 2019","volume":"42 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-10-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115098956","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
The major leading fact for environmental issue is due to pollution. Water pollution is basically the effective cause herewith due to pollutants released from industries, battery waste, e-waste etc. To eradicate the health issues in relation to environment is observed when heavy metals are removal from wastewater to some extent. Lead is one of the highest toxic metal among others. In the present work, the biosorption of lead from wastewater using marine algae ulva lactuaca is carried away. biosorption is considered as an effective process. The Optimization of biosorbed lead under the experimental process is predicted by the help of the 3-D RSM designing. CCD (central composite design) is a 3 D design used to illustrate the optimum conditions according to the experiment performed and support to justify the final results obtained as an optimum values of pH 3.67, dosage 12 g/L, concentration 30.01 mg/L, Temperature 318K and % removal and Desirability are shown best as 94.9566 % and 0.808 respectively.The major leading fact for environmental issue is due to pollution. Water pollution is basically the effective cause herewith due to pollutants released from industries, battery waste, e-waste etc. To eradicate the health issues in relation to environment is observed when heavy metals are removal from wastewater to some extent. Lead is one of the highest toxic metal among others. In the present work, the biosorption of lead from wastewater using marine algae ulva lactuaca is carried away. biosorption is considered as an effective process. The Optimization of biosorbed lead under the experimental process is predicted by the help of the 3-D RSM designing. CCD (central composite design) is a 3 D design used to illustrate the optimum conditions according to the experiment performed and support to justify the final results obtained as an optimum values of pH 3.67, dosage 12 g/L, concentration 30.01 mg/L, Temperature 318K and % removal and Desirability are shown best as 94.9566 % and 0.808 respectively.
{"title":"An approach by design of experiments by response surface methodology for adsorptive removal of lead by ulva lactuaca","authors":"S. V. Kumar, A. Prabhakar","doi":"10.1063/1.5131602","DOIUrl":"https://doi.org/10.1063/1.5131602","url":null,"abstract":"The major leading fact for environmental issue is due to pollution. Water pollution is basically the effective cause herewith due to pollutants released from industries, battery waste, e-waste etc. To eradicate the health issues in relation to environment is observed when heavy metals are removal from wastewater to some extent. Lead is one of the highest toxic metal among others. In the present work, the biosorption of lead from wastewater using marine algae ulva lactuaca is carried away. biosorption is considered as an effective process. The Optimization of biosorbed lead under the experimental process is predicted by the help of the 3-D RSM designing. CCD (central composite design) is a 3 D design used to illustrate the optimum conditions according to the experiment performed and support to justify the final results obtained as an optimum values of pH 3.67, dosage 12 g/L, concentration 30.01 mg/L, Temperature 318K and % removal and Desirability are shown best as 94.9566 % and 0.808 respectively.The major leading fact for environmental issue is due to pollution. Water pollution is basically the effective cause herewith due to pollutants released from industries, battery waste, e-waste etc. To eradicate the health issues in relation to environment is observed when heavy metals are removal from wastewater to some extent. Lead is one of the highest toxic metal among others. In the present work, the biosorption of lead from wastewater using marine algae ulva lactuaca is carried away. biosorption is considered as an effective process. The Optimization of biosorbed lead under the experimental process is predicted by the help of the 3-D RSM designing. CCD (central composite design) is a 3 D design used to illustrate the optimum conditions according to the experiment performed and support to justify the final results obtained as an optimum values of pH 3.67, dosage 12 g/L, concentration 30.01 mg/L, Temperature 318K and % removal and Desirability are shown best as 94.9566 % and 0.808 respectively.","PeriodicalId":435771,"journal":{"name":"INTERNATIONAL CONFERENCE ON INVENTIVE MATERIAL SCIENCE APPLICATIONS : ICIMA 2019","volume":"106 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-10-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115805874","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
In 1905, Einstein first proposed the special theory of relativity. That time, very few understood it and even fewer believed in this theory. It was until 1919, when first experiment was carried out on the general theory of relativity which actually proved the special theory of relativity by some inferences of the experiment. This paper will revise Einstein’s mass – energy equivalence equation E = mC2 with some conceptual modifications in the lights of particle – antiparticle pair production and annihilation to modify the equation into E = 2mC2. The basics of the special relativity are kept intact as exactly the same but the conceptual modifications are arranged to justify the conclusion. Also I will focus on concepts of transitional masses, the space – time and parallel Universes briefly.In 1905, Einstein first proposed the special theory of relativity. That time, very few understood it and even fewer believed in this theory. It was until 1919, when first experiment was carried out on the general theory of relativity which actually proved the special theory of relativity by some inferences of the experiment. This paper will revise Einstein’s mass – energy equivalence equation E = mC2 with some conceptual modifications in the lights of particle – antiparticle pair production and annihilation to modify the equation into E = 2mC2. The basics of the special relativity are kept intact as exactly the same but the conceptual modifications are arranged to justify the conclusion. Also I will focus on concepts of transitional masses, the space – time and parallel Universes briefly.
{"title":"Basics of the special relativity are kept as exactly the same: It is just conceptual modification of mass-energy equivalence equation","authors":"P. Debnath","doi":"10.1063/1.5131600","DOIUrl":"https://doi.org/10.1063/1.5131600","url":null,"abstract":"In 1905, Einstein first proposed the special theory of relativity. That time, very few understood it and even fewer believed in this theory. It was until 1919, when first experiment was carried out on the general theory of relativity which actually proved the special theory of relativity by some inferences of the experiment. This paper will revise Einstein’s mass – energy equivalence equation E = mC2 with some conceptual modifications in the lights of particle – antiparticle pair production and annihilation to modify the equation into E = 2mC2. The basics of the special relativity are kept intact as exactly the same but the conceptual modifications are arranged to justify the conclusion. Also I will focus on concepts of transitional masses, the space – time and parallel Universes briefly.In 1905, Einstein first proposed the special theory of relativity. That time, very few understood it and even fewer believed in this theory. It was until 1919, when first experiment was carried out on the general theory of relativity which actually proved the special theory of relativity by some inferences of the experiment. This paper will revise Einstein’s mass – energy equivalence equation E = mC2 with some conceptual modifications in the lights of particle – antiparticle pair production and annihilation to modify the equation into E = 2mC2. The basics of the special relativity are kept intact as exactly the same but the conceptual modifications are arranged to justify the conclusion. Also I will focus on concepts of transitional masses, the space – time and parallel Universes briefly.","PeriodicalId":435771,"journal":{"name":"INTERNATIONAL CONFERENCE ON INVENTIVE MATERIAL SCIENCE APPLICATIONS : ICIMA 2019","volume":"182 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-10-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133455723","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Polypyrrole/Prussian blue/Titanium dioxide composite, (PPy/PB/TiO2) was successfully prepared through polymerization of pyrrole and formation of PB nanocubes and TiO2 nanoparticles. Synthesized composite were characterized structurally and morphologically through XRD and FESEM analysis. XRD pattern revealed the crystallinity of the polymer composite which suggests a strong interaction between PPy, PB and anatase phase of TiO2 nanoparticles. The morphology of the composite shows the irregular spherical particles of PPy, PB and TiO2 with aggregates. PPy/PB/TiO2 coated intensity modulated fiber optic sensor for the detection of isopropyl alcohol at room temperature is reported. The synthesized polymer composite is coated on clad removed polymethyl methacrylate (PMMA) fiber by dip coating technique and PPy/PB/TiO2 coated fibers are used as sensors. The sensor response is studied by measuring the change in output light intensity for different isopropyl alcohol concentrations in the range of 0-500 ppm. The sensor exhibited a linear variation in the output light intensity with the toxic vapor concentration. Further, the gas sensitivity of the sensor is discussed briefly.
{"title":"Facile synthesis of ternary polypyrrole/Prussian blue/Titanium dioxide composite and their performance for isopropyl alcohol sensing at room temperature","authors":"J. Charles, S. Muthusamy","doi":"10.1063/1.5131591","DOIUrl":"https://doi.org/10.1063/1.5131591","url":null,"abstract":"Polypyrrole/Prussian blue/Titanium dioxide composite, (PPy/PB/TiO2) was successfully prepared through polymerization of pyrrole and formation of PB nanocubes and TiO2 nanoparticles. Synthesized composite were characterized structurally and morphologically through XRD and FESEM analysis. XRD pattern revealed the crystallinity of the polymer composite which suggests a strong interaction between PPy, PB and anatase phase of TiO2 nanoparticles. The morphology of the composite shows the irregular spherical particles of PPy, PB and TiO2 with aggregates. PPy/PB/TiO2 coated intensity modulated fiber optic sensor for the detection of isopropyl alcohol at room temperature is reported. The synthesized polymer composite is coated on clad removed polymethyl methacrylate (PMMA) fiber by dip coating technique and PPy/PB/TiO2 coated fibers are used as sensors. The sensor response is studied by measuring the change in output light intensity for different isopropyl alcohol concentrations in the range of 0-500 ppm. The sensor exhibited a linear variation in the output light intensity with the toxic vapor concentration. Further, the gas sensitivity of the sensor is discussed briefly.","PeriodicalId":435771,"journal":{"name":"INTERNATIONAL CONFERENCE ON INVENTIVE MATERIAL SCIENCE APPLICATIONS : ICIMA 2019","volume":"12 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-10-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131102143","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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